Girden Clark Rathburn (Rathbone, Rathbun), Private, Company F, 8th Michigan Infantry, Killed in Action. Battle of Secessionville, South Carolina

http://www.michigangenealogy.org/girden-clark-rathburn-rathbone-rathbun.html

The son of Lucy Austin Rathbone and Ebenezer Rathbone (13th Michigan) link below
http://www.fadedfootsteps.net/veterans/profile/1946/private-ebenezer-rathbun-rathbone-company-a-13th-michigan-infantry-us-us-union-army.html
Grew up in Thornapple (Middleville), Michigan.
He was 18 years old when he enlisted on 9/7/1861 at Thornapple, Michigan as a Private.
On 9/23/1861 he mustered into "F" Co. MI 8th Infantry
He was Killed on 6/16/1862 at the Battle of Secessionville, South Carolona. His body to date, has never been identified.

If anyone has information on where he might be buried, help would be appreciated.